OTTAWA, ON - JANUARY 18: Ottawa Senators Defenceman Erik Karlsson (65) takes a hit against the boards from St. Louis Blues Left Wing Dmitrij Jaskin (23) during the first period of the NHL game between the Ottawa Senators and the St. Louis Blues on Jan. 18, 2018 at the Canadian Tire Centre in Ottawa, Ontario, Canada. (Photo by Steven Kingsman/Icon Sportswire)